A Study on Application of LID Technology for Improvement of Drainage Capacity of Sewer Network in Urban Watershed

도시 유역의 우수관망 통수능 개선을 위한 LID 기술 적용 연구

  • Baek, Jongseok (Water Resources Research Center, K-water Convergence Institute) ;
  • Kim, Baekjoong (Water Resources Research Center, K-water Convergence Institute) ;
  • Lee, Sangjin (Water Resources Research Center, K-water Convergence Institute) ;
  • Kim, Hyungsan (Water Resources Research Center, K-water Convergence Institute)
  • 백종석 (K-water융합연구원 물순환연구소) ;
  • 김백중 (K-water융합연구원 물순환연구소) ;
  • 이상진 (K-water융합연구원 물순환연구소) ;
  • 김형산 (K-water융합연구원 물순환연구소)
  • Received : 2017.06.29
  • Accepted : 2017.09.22
  • Published : 2017.11.30


Both domestic and overseas urban drainage systems have been actively researched to solve the problems of urban flash floods and the flood damage that is caused by local downpours. Recent urban planning has been designed to better manage the floods of decentralized rainfall-management systems, and the installation of green infrastructure and low-impact development (LID) facilities at national ministries has been recommended. In this study, we use the EPA SWMM model to construct a decentralized rainfall-management network for each small watershed, and we analyze the effect of the drainage-capacity improvement from the installation of the LID technologies in vulnerable areas that replaces the network-expansion process. In the design of the existing urban piping systems, it is common to increase the pipe size due to the increment of the impervious area, the steep terrain, and the sensitive entrance-ramp junction; however, the installation of green infrastructure and LID facilities will be sufficient for the construction of a safe urban drainage system. The applications of LID facilities and green infrastructure in urban areas can positively affect the recovery of the corresponding water cycles to a healthy standard, and it is expected that further research will occur in the future.


Supported by : 국토교통과학기술진흥원


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